Read capacity in context
A load chart applies to defined configurations: boom length, counterweight, outrigger extension and other parameters specified by the manufacturer. The advertised maximum capacity does not describe every working position.
The mass being assessed includes the lifting equipment required by the relevant chart. Planning must cover the load path and landing position as well as the starting point: radius can increase during movement. Limiters help control dangerous conditions, but they do not replace correct crane selection and lift planning.
Check beneath the supports
Apparently firm paving may conceal utilities, tanks, fill or voids. Site information must allow the ground capacity to be assessed and suitable supports prepared. Rain, nearby trenches and changes in ground condition can invalidate a previously acceptable arrangement.
Spreader pads cannot be sized by guesswork. They must suit the transmitted loads and ground capacity for the intended configuration. Space for outriggers, counterweight movement and site traffic is part of crane selection, not an issue to resolve only after arrival.
Organise the whole lift
Managing Cranes and lifting equipment requires reliable information about the load, lifting points and landing area. People must be kept away from the load path and crushing zones. Restricted visibility requires agreed signalling and communication arrangements.
Wind particularly affects loads with a large exposed area. The limits applicable to the equipment and load need review before starting and when conditions change. Power lines and other installations require specific controls; relying on the operator’s visual judgement of distance is insufficient.
Responsibilities and changes
In Spain, ITC MIE-AEM-4 distinguishes responsibilities for the machine, its positioning and direction of the lifting operation. Hiring a crane does not remove the need to provide reliable information about the ground and the requested work.
Applicable documentation, checks and competent personnel must be in place before operation. Changes to weight, radius, crane position or ground conditions require the plan to be reviewed. These principles support assessment; they are not an erection procedure or a capacity calculation. Local legal requirements remain applicable outside Spain.
